The part number **PWR13JTRC1O2201** refers to a high-power wirewound resistor typically manufactured by brands like Bourns or specialized power component manufacturers. Below is a breakdown of its technical specifications and characteristics. --- ### 1. Part Number Breakdown While specific manufacturer prefixes can vary slightly, this series follows a standard nomenclature for power resistors: | Segment | Meaning | Description | | :--- | :--- | :--- | | **PWR** | Series | Power Wirewound Resistor series. | | **13** | Size/Package | Refers to the physical dimensions and power rating (Standardized size). | | **J** | Tolerance | Indicates a **±5%** resistance tolerance. | | **TR** | Packaging | Tape and Reel (designed for automated surface mount assembly). | | **C** | Configuration | Ceramic core or specific coating type. | | **1O2201** | Resistance Code | Decoded as **220 Ohms** (220 followed by 1 zero). | --- ### 2. Technical Specifications This component is designed to handle significant heat and current compared to standard film resistors. * **Type:** Surface Mount (SMD) Wirewound Resistor. * **Resistance:** 220 Ω (Ohms). * **Tolerance:** ±5%. * **Power Rating:** Typically ranges from **1W to 3W** depending on the specific "13" size enclosure and PCB heat-sinking. * **Temperature Coefficient:** Usually low (±20 to ±100 ppm/°C), providing stability across temperature changes. * **Construction:** A resistive wire is wound around a ceramic core and encased in a flameproof molded package. --- ### 3. Key Features & Applications #### Features * **Surge Capability:** Wirewound resistors are excellent at handling high-energy surges and pulses that would destroy thin-film resistors. * **Heat Dissipation:** Designed with materials that transfer heat efficiently to the PCB. * **Flameproof:** The molded casing prevents the component from catching fire under extreme overload conditions. #### Common Applications 1. **Power Supplies:** Used as a "bleeder" resistor or for inrush current limiting. 2. **Motor Controls:** Used in snubbers or current sensing. 3. **Industrial Electronics:** Ideal for harsh environments where physical durability and thermal stability are required. 4. **Automotive:** Power management modules. --- ### 4. Comparison Table: Wirewound vs. Thick Film | Feature | Wirewound (PWR Series) | Standard Thick Film | | :--- | :--- | :--- | | **Pulse Handling** | Excellent | Poor | | **Precision** | Moderate | High | | **Inductance** | Higher (due to coils) | Very Low | | **Durability** | High | Moderate |